Thread: freeing an array of structures

is that possible

for eg:

i have assigned a max of 50 elements in this array of structures

and i import data from a file and only 15 elements and the remaining 35 are doing nothing

is it possible to free the memory for that or is there any memory been assigned to be freed?

i tried this for instance and it didnt work

Code:

for (i = counter; i < 50; i++)
{
free (data[i]);
data[i] = NULL'
}

and it doesnt work

any comments
if u wanna see a working example of this array of structures program u can see it at www.mdofit.com/lab/lab5.c

it is working fine and is all done but i was hoping to make it more efficient

thanks

btw
anyone is free to use that program for anything they want

do a search for linked list's. Using linked lists, you will be able to assign the memory as you use it to a maximum amount, which means you wont waist anything. Makes the program a little tricker to write but if you want efficency with memory then you need to use pointers.

No. It is not possible to free an array declared. That's where "Data Structures" play their roles. You can allocate as much memory as you want (ofcourse, depends on the system) and free it the same way.

use realloc

i have just started learning about linked lists so i will see what can be done with it

i did not dynamically assign memory to this array. it was declared like to contain 50 elements from start